Rainbow Electronics MAX3469 - Manual (Page 12)

MAX3465–MAX3469
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
RS-422 Transceivers
12 ______________________________________________________________________________________
MAX3468
MAX3469
(HALF-DUPLEX)
DI
DE
RO
RE
RE
D
R
B
A
B
A A B A B
120 Ω 120 Ω
D
R
DI DE RO RE
D
R
DI DE RO
D
R
DE
DI
RO
RE
Figure 13. Typical Half-Duplex RS-485 Network
MAX3465
MAX3466
MAX3467
(FULL-DUPLEX)
D
R
R
D
D
R
DI DE RO RE
Y Z B A A B
D
R
DI DE RO RE
Y Z
120 Ω
120 Ω
120 Ω
120 Ω
Y
Z
B
A
DI
DE
RO
RE
NOTE: RE AND DE ON MAX3465/MAX3466/MAX3467 ONLY.
RO
DE
DI
RE
A
B
Z
Y
B
Figure 14. Typical Full-Duplex RS-485 Network